Unloading device for rubber refiners



' 1,629,240 y 1927' v R. s. TROWBRIDGE UNLOADING DEVICE FOR RUBBERREFINERS Filed Dec. 21. 1926 R. 8.7% kid 6 Patented May 17, 1927.

nor s. TROWB'RIDGE, or BUTLER, NEW JERSE .nnnonmne DEVICEFonnnnnnnnnrrnnns.

Application filed'Decemberfil, 1926., Serial No. 156,216.

This invention relates to unloading devices for rubber refiners and moreparticularly to an unloading device for'the sheet forming rolls thereof.I

As is well known to those familiar with the art, in rubber refining orreclaiming apparatus, in one stage of the manufacture, the

rubber is fed between, adjacent faces of a pair of hard faced highlypolished rotating rolls, whichare forced together under such pressurethat'the rubber in its passage therethrough is reduced to a, sheet of.093 to .005 of an inch in thickness, which adheres-to one of the rolls.From this roll, it is separated by a knife and the sheet, thus producedcarried on to the next machine for the next op: eration thereon;Under'many circumstances,

it is convenient that this sheet be :formed or four inches in diameter,An important into a roll of substantially three and one-half objectofthe invention is to provide means whereby thissheet may be formed into,the roll as it leaves the knife by meansof which it. is separated fromthe forming roll.

A further object of the invention is to produce a device of thischaracter such that when the roll formedfrom the sheet attains apredetermined size, it will automatic-ally break away and be dischargedto a bin or conveyor, by means of which it may be transported to themachine performing the next operation. a

A further object of the inventionv is the provision of a device of thischaracter deriving its necessary motive power from' the sheet formingthe roll These and other obj construction shown in the, accompanyingdrawings, wherein for'the purpose of illustration is shown apreferred'embodiment of my invention and wherein I i Figure 1 is a side elevationof arubber refining machine embodying an unloading mechanismconstructedin accordance with my invention Figure'2 is a section takenon the line 22 of Figure 1. V H j 1 Referring now more particularly tothe drawings. the characters. R andR generally indicate the rolls of thesheetforming machine of rubber refining apparatus. Adjacent faces ofthese rolls move in the same direction and rubber R. is introdueedbestween the rolls at the upper side "thereof. The rolls are forcedtogether with such presects I attain by thesure that sheet S of rubberis produced which adheres to the surface of the roll it until it reachesa separating knife hQb-y v means of which it is peeled from the roll,The rolls it andit are supported a suit; able frame F, whichlikewiseserves to sups port the knife it. s 1

' In, accordance with my invention, I"-provide upon the frame I a pairof journals which are preferably adj ust abie toward and away from theaxis of theioll R, as, indicated at 11, andprovide means. for mountingthe ends of a roller 12, which preferably extend along the full lengthof the roll 1% in parallel relation thereto andslightlybe yo-nd the,ends of this roll. The extended ends of the roller 12 have securedthereto gears 13 and provide mountings Ior, plates 14.- lhe plates 14;beneath the roller 12 pro vide bearings 15 for the ends of a secondroller 16, which hasgearsl? secured thereto meshing with the gears '13of the roller 12. One or both oft-he plates 14c are provided with anextension 18 projecting out wardly from the rollv R. These,,1,extensionsprovide means'fo r connecting witlithe plates a bias, at presentindicatedasa weight 19-, whereby the plates 14 may be caused to r0- tateabout the roller 12 as an axis to force the roller 16 into contactingrelation with the outer surface of the sheet .8 which, at the point ofcontact of the roller 16, i s still adhering tothe; surface of the rollR.

In operation ofthe apparatus,the sheet separated by the knife K, becauseofits extreme thinness and flexibility bendsdowne wardly and comes intocontact with the surface of the roller 12. The rollers 12 and 1.6 are soproportionedthat their gears 13 and 17 with the peripheral speed of theroller 12 is the same as the peripheralspeed of the rollR. The sheetcoining intocontact with the roller 12 is thrown against the'back 7 faceof the sheet S immediately in advance of the knife and is thus formedinto a roll which enlarges in size until its diameter is such that itsaxial center passes a vertical plane including the axis of the roller12;

At. this time, the roll formed bythe'sheet disclosed). By adjusting theroller 12 toward or away from the axis of the roll R,

the size of the roll 20 formed by the sheet which leaves the machine maybe regulated within the necessary limits.

As other means might, be. provided for driving the roller 12 and since agreat meas ure of the necessary rotation is provided by the contact ofthe separated sheet with the i outer surface of the sheet while stillattached to the drum and, therefore, some other means might be providedfor directing the separated sheet against the drum, I do not limitmyself to the construction hereinbefore set forth except as hereinafterclaimed.

I claim:-

' '1. The combination with the sheet forming roll of rubber refiningapparatus and the knife for separating the sheet from the roll,

of means adjacent the roll supporting the separated sheet and directingthe same toward the surface of the roll at a point ad jacentto and inadvance of the knife where by the rotation of the roll serves to' rotatethe separated end and form a roll there from. 1 i

2. The combination with the sheet forming roll of rubber refiningapparatus and the knife for separating the sheet from the roll,

roll of rubber refining apparatus, a knife for separating the sheet fromthe roll, of a roll forming roller adjacent to and paralleling the sheetforming roll adjacent to and below the knife, and means for rotatingsaid sheet forming roll.

4. The combination with the sheet forming roll of rubber refiningapparatus, a knife for separating the sheet from the roll, of a rollforming roller adjacent to and paralleling the sheet forming rolladjacent to and below: the knife, and means for rotating said sheetforming roll and at substantially the same'peripheral speed as and inthe copposite direction from the sheet forming roll. 7 5. Thecombination with the sheet forming roll of rubber refining apparatus, aknife for separating the sheet from the roll, of a roll forming rolleradjacent to and paralleling the sheet forming roll adjacent to and belowthe knife, and means for rotating said sheet forming roll including asecond roller engaging the rubber covered surface of v the sheet ingroll of rubber refining apparatus, a knife for separating the sheet fromthe roll, of a roll forming roller adjacent to and paralleling the sheetforming roll adjacent to and below the knife, and means for rotatingsaidsheet forming roll and at substan tially the same peripheral speedas and in the opposite direction from the sheet form-' ingroll-including a second roller engaging the rubber covered surface ofthe sheet forming roll and a driving connection between said rollers. i

7. The combination with the sheet form: ing roll of rubber refiningapparatus, a knife for separating the sheet from the roll, of arollforming roller adjacent to and parallel ing the sheet forming rolladjacent to and below the knife, means for rotating said,

sheet forming roll and means for adjusting the roller toward and awayfrom the roll.

8. The combinationwith the sheet forming roll of rubber refiningapparatus, a knife 7 for separating the sheet'from theroll, of a rollforming roller adjacent to and paralleling thesheet forming rolladjacent to and below the knife, means forrotat'ing"said sheet formingroll and-at substantially the same peripheral speed-as and intheopposite direction from the sheet forming-roll and means for adjustingthe roller toward and away from the roll. I

9. The combination with the sheet forming roll of rubber refiningapparatus, a knife for separating the sheet from the roll, of a rollforming roller adjacent to and paralleling the sheet forming rolladjacent to and below the knife, means for rotating said sheet formingroll including a second roller engag ing the rubber covered surface ofthe sheet forming roll, a driving connection between said rollers andmeans for adjusting the first named roller toward and away from saidroll. 1

10. The combination with the sheet forming roll of rubber refiningapparatus, a knife for separating the sheet from the roll, of a rollforming roller adjacent to and paralleling the sheet forming rolladjacent to and below the knife, means for rotating said sheet formingroll and at substantially the same peripheral speed as andin theopposite direction from the sheet forming roll including a second rollerengaging the rubber covered surface of the sheet forming roll, a drivingconnection between said rollers and means for adjusting the first named,

roller toward and away from said roll.

In testimony whereof I hereunto afiix m signature.

ROY TROVVBRIDGE.

